Fix linter warnings

Author: y9v

lib/datadog/appsec/api_security/route_extractor.rb

@@ -56,7 +56,6 @@ def self.route_pattern(request)
             pattern = request.env[SINATRA_ROUTE_KEY].split(SINATRA_ROUTE_SEPARATOR, 2)[1]
             "#{request.script_name}#{pattern}"
           elsif request.env.key?(RAILS_ROUTE_KEY)
-            route = request.env[RAILS_ROUTE_KEY]
             request.env[RAILS_ROUTE_KEY].path.spec.to_s.delete_suffix(RAILS_FORMAT_SUFFIX)
           elsif request.env.key?(RAILS_ROUTE_URI_PATTERN_KEY)
             request.env[RAILS_ROUTE_URI_PATTERN_KEY].delete_suffix(RAILS_FORMAT_SUFFIX)
@@ -79,7 +78,7 @@ def self.route_pattern(request)
           else
             Tracing::Contrib::Rack::RouteInference.read_or_infer(request.env)
           end
-        rescue => e
+        rescue
           AppSec.telemetry&.error('AppSec: Could not extract route pattern for APISecurity sampler')
 
           nil

spec/datadog/appsec/api_security/route_extractor_spec.rb

@@ -203,7 +203,11 @@
 
           allow(request).to receive(:env).and_return({
             'action_dispatch.routes' => route_set,
-            'action_dispatch.request.path_parameters' => { 'controller' => 'users', 'action' => 'show', 'id' => '1' }
+            'action_dispatch.request.path_parameters' => {
+              'controller' => 'users',
+              'action' => 'show',
+              'id' => '1'
+            }
           })
 
           expect(route_set).to receive(:request_class).and_raise(StandardError)